EP3605512A4 - Led display device and method for correcting luminance thereof - Google Patents

Led display device and method for correcting luminance thereof Download PDF

Info

Publication number
EP3605512A4
EP3605512A4 EP17903923.5A EP17903923A EP3605512A4 EP 3605512 A4 EP3605512 A4 EP 3605512A4 EP 17903923 A EP17903923 A EP 17903923A EP 3605512 A4 EP3605512 A4 EP 3605512A4
Authority
EP
European Patent Office
Prior art keywords
display device
led display
correcting luminance
luminance
correcting
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP17903923.5A
Other languages
German (de)
French (fr)
Other versions
EP3605512A1 (en
Inventor
Naoyuki Machida
Shigenori Shibue
Yoshinori Asamura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Publication of EP3605512A1 publication Critical patent/EP3605512A1/en
Publication of EP3605512A4 publication Critical patent/EP3605512A4/en
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/2007—Display of intermediate tones
    • G09G3/2014—Display of intermediate tones by modulation of the duration of a single pulse during which the logic level remains constant
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2300/00—Aspects of the constitution of display devices
    • G09G2300/04—Structural and physical details of display devices
    • G09G2300/0404—Matrix technologies
    • G09G2300/0413—Details of dummy pixels or dummy lines in flat panels
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0233—Improving the luminance or brightness uniformity across the screen
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/029—Improving the quality of display appearance by monitoring one or more pixels in the display panel, e.g. by monitoring a fixed reference pixel
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/04—Maintaining the quality of display appearance
    • G09G2320/041—Temperature compensation
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/04—Maintaining the quality of display appearance
    • G09G2320/043—Preventing or counteracting the effects of ageing
    • G09G2320/045—Compensation of drifts in the characteristics of light emitting or modulating elements
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/04—Maintaining the quality of display appearance
    • G09G2320/043—Preventing or counteracting the effects of ageing
    • G09G2320/048—Preventing or counteracting the effects of ageing using evaluation of the usage time
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2360/00—Aspects of the architecture of display systems
    • G09G2360/14—Detecting light within display terminals, e.g. using a single or a plurality of photosensors
    • G09G2360/145—Detecting light within display terminals, e.g. using a single or a plurality of photosensors the light originating from the display screen

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Control Of El Displays (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
EP17903923.5A 2017-03-30 2017-03-30 Led display device and method for correcting luminance thereof Withdrawn EP3605512A4 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2017/013155 WO2018179196A1 (en) 2017-03-30 2017-03-30 Led display device and method for correcting luminance thereof

Publications (2)

Publication Number Publication Date
EP3605512A1 EP3605512A1 (en) 2020-02-05
EP3605512A4 true EP3605512A4 (en) 2020-02-05

Family

ID=63674412

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17903923.5A Withdrawn EP3605512A4 (en) 2017-03-30 2017-03-30 Led display device and method for correcting luminance thereof

Country Status (6)

Country Link
US (1) US20200111408A1 (en)
EP (1) EP3605512A4 (en)
JP (1) JP6703185B2 (en)
CN (1) CN110462722A (en)
RU (1) RU2720980C1 (en)
WO (1) WO2018179196A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110301000B (en) * 2019-01-04 2022-03-04 京东方科技集团股份有限公司 Method for compensating brightness unevenness of display device and corresponding display device
WO2021192221A1 (en) * 2020-03-27 2021-09-30 三菱電機株式会社 Led display device and led display method
WO2022074784A1 (en) * 2020-10-08 2022-04-14 三菱電機株式会社 Led display system
CN115112228A (en) * 2021-03-18 2022-09-27 北京小米移动软件有限公司 Method and device for determining screen light intensity value and storage medium
CN113611242B (en) * 2021-07-30 2022-06-21 卡莱特云科技股份有限公司 LED screen correction coefficient generation method, LED screen correction coefficient adjustment method and LED screen correction system
CN117253448B (en) * 2023-11-16 2024-05-14 深圳市连硕显电子有限公司 LED display screen correction method and system

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160343349A1 (en) * 2015-05-20 2016-11-24 Mitsubishi Electric Corporation Led display apparatus and video display apparatus
JP2017032889A (en) * 2015-08-05 2017-02-09 三菱電機株式会社 LED display device
WO2017033709A1 (en) * 2015-08-24 2017-03-02 三菱電機株式会社 Led display device and method for correcting luminance thereof

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1115437A (en) 1997-06-27 1999-01-22 Toshiba Corp Led display device
JP2006330158A (en) 2005-05-24 2006-12-07 Matsushita Electric Ind Co Ltd Led display device
JP2008122516A (en) * 2006-11-09 2008-05-29 Matsushita Electric Ind Co Ltd Display device and video signal processing system
CA2691627A1 (en) * 2007-07-11 2009-01-15 Yasuo Inoue Display device, picture signal processing method, and program
JP5047850B2 (en) * 2008-03-18 2012-10-10 パイオニア株式会社 Color display panel and display device
JP5598053B2 (en) * 2010-03-30 2014-10-01 ソニー株式会社 Signal processing device, display device, electronic device, signal processing method and program
US9526141B2 (en) * 2012-11-21 2016-12-20 Lighthouse Technologies Limited Automatic color adjustment on LED screens
JP6742703B2 (en) * 2015-08-05 2020-08-19 三菱電機株式会社 LED display device
EP3361471A1 (en) * 2015-10-05 2018-08-15 Mitsubishi Electric Corporation Light-emitting diode display device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160343349A1 (en) * 2015-05-20 2016-11-24 Mitsubishi Electric Corporation Led display apparatus and video display apparatus
JP2017032889A (en) * 2015-08-05 2017-02-09 三菱電機株式会社 LED display device
WO2017033709A1 (en) * 2015-08-24 2017-03-02 三菱電機株式会社 Led display device and method for correcting luminance thereof
EP3343550A1 (en) * 2015-08-24 2018-07-04 Mitsubishi Electric Corporation Led display device and method for correcting luminance thereof

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2018179196A1 *

Also Published As

Publication number Publication date
JP6703185B2 (en) 2020-06-03
EP3605512A1 (en) 2020-02-05
WO2018179196A1 (en) 2018-10-04
US20200111408A1 (en) 2020-04-09
JPWO2018179196A1 (en) 2019-06-27
RU2720980C1 (en) 2020-05-15
CN110462722A (en) 2019-11-15

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